This is a toy for a more advanced user. After testing it on both myself and my partner, it was determined that the clamp was too strong on these for long term use, especially when combined with the weight of the chain. For me, who had more experience with nipple clamps, they were uncomfortable but not overly painful. For my partner, who had only used one set of nipple clamps before, these were excruciatingly painful. We also used these as labia weights and again, unless you are an experienced player, I wouldn't suggest it. We didn't even attempt to use them for CBT as my partner was unwilling to try after feeling the pressure they gave on his nipples.

The clamps themselves had no smell, aside from a faint odor of new rubber when directly sniffed. The stoppers have very little give, no padding of any kind and are very smooth. However, as with anything, putting that much pressure on delicate skin they have a tendency to stick to skin when being removed. The chain itself was a bit heavy for the clamps but was sturdy and did not come apart when tugged roughly. My partner and I had very few concerns with this toy. Those being: the stoppers could be removed with very little force, exposing the alligator tooth texture of the clamp itself. The chain links were also not fully closed/welded shut, this leads to concerns about the toy's future durability.

These clamps were a bit tough to get open. They take a lot of pressure to get to open to full size, and even that isn't very large. I would not suggest this toy for people with large nipples as it would cause uncomfortable pinching since it is not designed to take a large amount of flesh. This toy is not adjustable, it comes as it comes, which is to say a lot of pressure for your money. I think the chain could have been a bit lighter, especially given the grip these pack, but it isn't too bad for an experienced nipple play enthusiast. As for the shape: I would have liked the actual clamp area to be a bit wider to better distribute the pressure.